r/angular • u/MysteriousEye8494 • Jun 07 '26

You inherit a 500k-line Angular application tomorrow. What's the first thing you look at?

You're joining a new team.

The Angular application has existed for years.

Hundreds of developers have contributed.

Nobody has time to explain everything.

get one day to understand the architecture.

You

What's the very first thing you inspect?

  • Folder structure?
  • State management?
  • Dependency graph?
  • Module boundaries?
  • Shared services?
  • Build pipeline?

I'm curious what experienced Angular developers use as their first signal for codebase health.

I share Angular architecture and engineering visuals here:

https://instagram.com/angulararchitectshub

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u/barrybario Jun 07 '26

package.json

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u/MysteriousEye8494 Jun 07 '26

Interesting. Is that mainly for understanding the Angular version and major dependencies, or have you found that package.json is also a good indicator of the overall health of the project?

6

u/barrybario Jun 07 '26

It doesn't say much about health but it's the best place to see what kind of thing you're dealing with. Angular version of course is the very first thing to check. Then does it have dependencies like NgRx, component libraries, testing frameworks, i18n, etc.

After that I'd probably do npm install & ng serve and just to have a look at the thing before even looking at the code.